No blueprint's that I know of …
Take pictures, measurements and notes of what thing look like and where they are.
Rip and grind everything out, then use cardboard or foam insulation board for patterns, fit and trim to fit stringer, transom, floor.
Make adjustments as you go.
Use good fiberglass and resin from a fiberglass supply company, not your local home supply store.
Get measuring cups and syringes to get proper mixing ratios, VERY IMPORTANT !
Also get disposable rollers, paint brushes, rubber gloves, acidtone, etc.
Cut to fit fiberglass before mixing resin, have someone help mixing so you can glass with out getting in and out of boat.
You only have 10 to 15 min. before resin starts to kick, so have everything ready to go before hand.
What you use for wood / composite, resin Poly / Vinyl / Epoxy, are things you'll have to decide on.
They all have there plus's and minus's ...